Radio Shack TRS-80 Service Manual page 8

SPECIFICATIONS
Power Supply
AC/AC adaptor
RF Modulator
For U.S.A./CANADA
Output Impedance
RF Output Terminal
RF Output Level
Central Processing Unit
6803 8-bit processor
clock speed 0.89 MHz
Memory Size
ROM (for BASIC)
RAM
Video Display
Character display
Semi-Graphic display
Color
Interface
Printer
Cassette
Bus line
Switch Box
Isolation
Dimensions
8-1/2" x 1-7/8" x 7"
Weight
1.75 Ibs (.7875 kilograms)
Input 120V/60Hz
Output 8.0V/1.5A 16W
Ch. FC (MHz)
3 61.25 +/-0.25
4 67.65
75 ohm
RCA jack
1.5 - 2.8 mV at 75 ohm
8K
4K (expandable up to
20K-external)
512 (32 x 16) upper case
characters
64 x 32 elements
8 colors - Green, Yellow,
Blue, Red, Buff, Cyan, Magenta, Orange
RS232C, 4 pin DIN
5-pin DIN 1500 baud
34-pin Cartridge connector
more than 60 dB
– 8 –
Fsc (MHz)
4.5 +/-0.2
4.5